sensors Mode-S transponder

872FA0

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA923A · BOEING 787-9 Dreamliner

Hex
872FA0
Octal
41627640
Decimal
8,859,552
Country
JP
Tail
JA923A
Type
B789
No current signal · last broadcast 17h ago
Flights observed
5
Distinct callsigns
3
Country
JP
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 872FA0.

Country allocation

The ICAO 24-bit address 872FA0 falls within the block assigned to Japan (JP) by ICAO Annex 10, Volume III. Every aircraft registered in Japan receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 3 distinct

Callsign Airline Flights Last seen
ANA844 - 2 2026-04-13
ANA841 All Nippon Airways 2 2026-04-13
ANA869 All Nippon Airways 1 2026-04-14

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 ANA869 HND → MNL Apr 14, 05:15 UTCApr 14, 05:20 UTC5m
2026-04-13 ANA844 - Apr 13, 19:50 UTCApr 13, 20:20 UTC30m
2026-04-13 ANA844 - Apr 13, 17:00 UTCApr 13, 20:10 UTC3h 10m
2026-04-13 ANA841 HND → SIN Apr 13, 05:45 UTCApr 13, 07:20 UTC1h 35m
2026-04-13 ANA841 HND → SIN Apr 13, 02:30 UTCApr 13, 03:05 UTC35m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the JA923A page for operator, model, and routing details .

Mode-S 872FA0 frequently asked

What is Mode-S code 872FA0?
872FA0 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA923A.
Where is Mode-S 872FA0 registered?
Mode-S code 872FA0 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 872FA0 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 872FA0, octal 41627640, decimal 8,859,552.
What flights does 872FA0 operate?
Mode-S 872FA0 has broadcast 3 distinct callsigns, including ANA844, ANA841, ANA869.